CN205113001U - Driving device for electric automobile - Google Patents
Driving device for electric automobile Download PDFInfo
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- CN205113001U CN205113001U CN201520925146.7U CN201520925146U CN205113001U CN 205113001 U CN205113001 U CN 205113001U CN 201520925146 U CN201520925146 U CN 201520925146U CN 205113001 U CN205113001 U CN 205113001U
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Abstract
The utility model relates to an electric automobile field, aim at provides a driving device for electric automobile, driving device for electric automobile, including motor and gearbox, the gearbox is fixed on the motor, be equipped with first bearing and rotor in the motor, the one end of rotor is installed circle in the first bearing, the other end of rotor is equipped with the internal spline, be equipped with second bearing, third bearing, fourth bearing, input shaft and output shaft in the gearbox, the outer lane of second bearing and the outer lane of third bearing correspond two opposite flanks that set up at the gearbox. The utility model has the advantages of the moment of torsion of motor passes through to transmit the electric automobile rear axle again after the gearbox changes speed, the gear transform realization of gearbox is passed through to electric automobile's variable speed, makes the motor can work all the time in the high efficiency district, and motor drive is efficient, and the energy consumption is little.
Description
Technical field
The utility model relates to electronlmobil field, particularly a kind of electric automobile driving apparatus.
Background technology
It is power that pure electric automobile refers to vehicle power, drives wheels travel with motor, meets the vehicle of arteries of communication, legislative control on safety requirements.Due to less relative to orthodox car to environmental concerns, its prospect is extensively had an optimistic view of.But pure electric automobile major part adopts motor straight to connect rear bridge driven vehicle in succession now, regulates the speed of a motor vehicle by the rotating speed controlling motor.Under this master mode, there are 3 limiting factors: one, because the restriction of rear-end ratio, motor maximum speed of revolution can not be too high, the moment of torsion of motor can not be too little, cause the iron core material of motor more, the motor produced is comparatively heavy, volume is comparatively large, and electrical efficiency cannot reach optimum.Two, because be electric-machine directly-driven, so vehicle is when low speed is exercised, and motor speed certainly will will drop to low regime, and when motor operates in slow speed of revolution district, efficiency is lower.Three, during braking energy feedback, motor speed is lower, and generating efficiency is low, and energy regenerating is few.So, adopt electric-machine directly-driven can restrict motor lightweight, increase energy consumption, also restrict energy utilization rate simultaneously, increase energy resource consumption.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect, provides the electric automobile driving apparatus that a kind of efficiency is high, energy consumption is low.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of electric automobile driving apparatus, comprise motor and change speed gear box, described change speed gear box is fixed on motor, clutch shaft bearing and rotor is provided with in described motor, one end of described rotor is arranged on the inner ring of described clutch shaft bearing, the other end of described rotor is provided with female splines, the second bearing is provided with in described change speed gear box, 3rd bearing, 4th bearing, input shaft and output shaft, the outer ring of described second bearing and the outer ring correspondence of the 3rd bearing are arranged on two opposite flanks of change speed gear box, described input shaft is arranged on the inner ring of the second bearing, described input shaft one end is provided with the male splines matched with described female splines, the described input shaft other end is fixed with the outer ring of described 4th bearing, described input shaft is connected with rotor with the cooperation of female splines by male splines, one end of described output shaft is arranged on the inner ring of the 3rd bearing, the other end of described output shaft is arranged on the inner ring of the 4th bearing.
The beneficial effects of the utility model are: the moment of torsion of motor is by being delivered to rear axle of electric automobile again after change speed gear box speed change, the speed change of electronlmobil is realized by the transforming gear of change speed gear box, make motor can always work in efficient district, motor drive efficiency is high, energy consumption is little, when braking energy feedback, electric power generation efficiency is high, reduces energy consumption further.And the production of motor can carry out corresponding improvement according to the structural change of actuating device, electric machine design can be become high rpm low torque, motor weight, volume can obviously reduce, motor is made to realize lightweight, the driving unit assembly weight that " motor+change speed gear box " is so simultaneously can be suitable with the motor weight of directly driving scheme, even less, minimizing material, reduce productive costs, simultaneously in driving device structure, three bearings and external structure is only adopted to fix to output shaft by rotor again to input shaft, interfixed by the 4th bearing between input shaft and output shaft simultaneously, the outer ring of the 4th bearing is fixed on input shaft, the inner ring of the 4th bearing is fixed on output shaft, make mutually to play a supporting role between input shaft and output shaft, but be independent of each other again when rotating, save number of parts, make the integral structure of actuating device compacter, reduce the volume of actuating device.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the utility model embodiment electric automobile driving apparatus;
Fig. 2 is the application schematic diagram of the utility model embodiment electric automobile driving apparatus in driving system;
Fig. 3 is the application schematic diagram of the utility model embodiment electric automobile driving apparatus on vehicle.
Label declaration:
1, motor; 2, change speed gear box; 3, bolt; 4, transmission shaft; 11, clutch shaft bearing; 12, rotor; 13, draw-in groove; 21, the second bearing; 22, the 3rd bearing; 23, the 4th bearing; 24, input shaft; 25, output shaft; 26, buckle.
Detailed description of the invention
By describing technology contents of the present utility model, structural attitude in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
The design of the utility model most critical is: the moment of torsion of motor is by being delivered to rear axle of electric automobile again after change speed gear box speed change, the speed change of electronlmobil is realized by the transforming gear of change speed gear box, make motor can always work in efficient district, motor drive efficiency is high, and energy consumption is little.
Refer to shown in Fig. 1 to Fig. 3, the electric automobile driving apparatus of the present embodiment, comprise motor 1 and change speed gear box 2, described change speed gear box 2 is fixed on motor 1, clutch shaft bearing 11 and rotor 12 is provided with in described motor 1, one end of described rotor 12 is arranged on the inner ring of described clutch shaft bearing 11, the other end of described rotor 12 is provided with female splines, the second bearing 21 is provided with in described change speed gear box 2, 3rd bearing 22, 4th bearing 23, input shaft 24 and output shaft 25, the outer ring of described second bearing 21 and the outer ring correspondence of the 3rd bearing 22 are arranged on two opposite flanks of change speed gear box 2, described input shaft 24 is arranged on the inner ring of the second bearing 21, described input shaft 24 one end is provided with the male splines matched with described female splines, described input shaft 24 other end is fixed with the outer ring of described 4th bearing 23, described input shaft 24 is connected with rotor with the cooperation of female splines by male splines, one end of described output shaft 25 is arranged on the inner ring of the 3rd bearing 22, on the other end of described output shaft 25 and the inner ring of the 4th bearing 23.
Working process of the present utility model is: motor 1 rotor 12 is provided with female splines, change speed gear box 2 input shaft 24 be provided with male splines and with the female splines interference fit of motor 1 rotor 12.Change speed gear box 2 end cap and motor 1 housing are connected and fixed by seam location bolt 3.Motor 1 drives the input shaft 24 of change speed gear box 2 to rotate after being energized and rotating, and transmitting torque.Change speed gear box 2 input shaft 24 is by corresponding gear conversion rotating speed and torque relationship, and by transmission of power to the output shaft 25 of change speed gear box 2, output shaft 25 outputs power on back axle and drives vehicle wheel rotation.
From foregoing description, the beneficial effects of the utility model are: the moment of torsion of motor 1 is by being delivered to rear axle of electric automobile again after change speed gear box 2 speed change, the speed change of electronlmobil is realized by the transforming gear of change speed gear box 2, make motor 1 can always work in efficient district, motor 1 drive efficiency is high, and energy consumption is little, when braking energy feedback, motor 1 generating efficiency is high, reduces energy consumption further.And the production of motor 1 can carry out corresponding improvement according to the structural change of actuating device, motor 1 can be designed to high rpm low torque, motor 1 weight, volume can obviously reduce, motor 1 is made to realize lightweight, the driving unit assembly weight that " motor 1+ change speed gear box 2 " is so simultaneously can be suitable with motor 1 weight of directly driving scheme, even less, minimizing material, reduce productive costs, simultaneously in driving device structure, three bearings and external structure is adopted to fix to output shaft 25 by rotor 12 again to input shaft 24, interfixed by the 4th bearing 23 between input shaft 24 and output shaft 25 simultaneously, the outer ring of the 4th bearing 23 is fixed on input shaft 24, the inner ring of the 4th bearing 23 is fixed on output shaft 25, make mutually to play a supporting role between input shaft 24 and output shaft 25, but be independent of each other again when rotating, save number of parts, make the integral structure of actuating device compacter, reduce the volume of actuating device.
Further, described change speed gear box 2 is provided with buckle 26, and described motor 1 is provided with the draw-in groove 13 matched with described buckle 26, and described change speed gear box 2 and motor 1 are located mutually by the cooperation of buckle 26 and draw-in groove 13.
Seen from the above description, make change speed gear box 2 and motor 1 quick position by the cooperation of buckle 26 and draw-in groove 13, improve and produce efficiency of assembling, and install firmly, improve the quality of products.
Further, also comprise bolt 3, described change speed gear box 2 is fixed on motor 1 by bolt 3.
Seen from the above description, bolt 3 fixation, simultaneously easy accessibility, be convenient to maintenance and periodic inspection.
Further, also comprise transmission shaft 4, described output shaft 25 is connected with transmission shaft 4.
Seen from the above description, output shaft 25 is connected with transmission shaft 4, and transmission shaft 4 is connected with automobile axle again, drives automobile back wheel to rotate.
Please refer to shown in Fig. 1 to Fig. 3, embodiment one of the present utility model is:
A kind of electric automobile driving apparatus, comprise motor 1 and change speed gear box 2, described change speed gear box 2 is fixed on motor 1, clutch shaft bearing 11 and rotor 12 is provided with in described motor 1, one end of described rotor 12 is arranged on the inner ring of described clutch shaft bearing 11, the other end of described rotor 12 is provided with female splines, the second bearing 21 is provided with in described change speed gear box 2, 3rd bearing 22, 4th bearing 23, input shaft 24 and output shaft 25, the outer ring of described second bearing 21 and the outer ring correspondence of the 3rd bearing 22 are arranged on two opposite flanks of change speed gear box 2, described input shaft 24 is arranged on the inner ring of the second bearing 21, described input shaft 24 one end is provided with the male splines matched with described female splines, described input shaft 24 other end is fixed with the outer ring of described 4th bearing 23, described input shaft 24 is connected with rotor with the cooperation of female splines by male splines, one end of described output shaft 25 is arranged on the inner ring of the 3rd bearing 22, on the other end of described output shaft 25 and the inner ring of the 4th bearing 23, described change speed gear box 2 is provided with buckle 26, described motor 1 is provided with the draw-in groove 13 matched with described buckle 26, described change speed gear box 2 and motor 1 are located mutually by the cooperation of buckle 26 and draw-in groove 13, also comprise bolt 3, described change speed gear box 2 is fixed on motor 1 by bolt 3, also comprise transmission shaft 4, described output shaft 25 is connected with transmission shaft 4.
In sum, the electric automobile driving apparatus that the utility model provides, the moment of torsion of motor is by being delivered to rear axle of electric automobile again after change speed gear box speed change, the speed change of electronlmobil is realized by the transforming gear of change speed gear box, and make motor can always work in efficient district, motor drive efficiency is high, energy consumption is little, when braking energy feedback, electric power generation efficiency is high, reduces energy consumption further.And the production of motor can carry out corresponding improvement according to the structural change of actuating device, electric machine design can be become high rpm low torque, motor weight, volume can obviously reduce, motor is made to realize lightweight, the driving unit assembly weight that " motor+change speed gear box " is so simultaneously can be suitable with the motor weight of directly driving scheme, even less, minimizing material, reduce productive costs, simultaneously in driving device structure, three bearings and external structure is only adopted to fix to output shaft by rotor again to input shaft, interfixed by the 4th bearing between input shaft and output shaft simultaneously, the outer ring of the 4th bearing is fixed on input shaft, the inner ring of the 4th bearing is fixed on output shaft, make mutually to play a supporting role between input shaft and output shaft, but be independent of each other again when rotating, save number of parts, make the integral structure of actuating device compacter, reduce the volume of actuating device, change speed gear box and motor quick position is made by the cooperation of buckle and draw-in groove, improve and produce efficiency of assembling, and install firmly, improve the quality of products, bolt fixation, easy accessibility simultaneously, be convenient to maintenance and periodic inspection, output shaft is connected with transmission shaft, transmission shaft is connected with automobile axle again, driving automobile back wheel rotates.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification sheets and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. an electric automobile driving apparatus, it is characterized in that: comprise motor and change speed gear box, described change speed gear box is fixed on motor, clutch shaft bearing and rotor is provided with in described motor, one end of described rotor is arranged on the inner ring of described clutch shaft bearing, the other end of described rotor is provided with female splines, the second bearing is provided with in described change speed gear box, 3rd bearing, 4th bearing, input shaft and output shaft, the outer ring of described second bearing and the outer ring correspondence of the 3rd bearing are arranged on two opposite flanks of change speed gear box, described input shaft is arranged on the inner ring of the second bearing, described input shaft one end is provided with the male splines matched with described female splines, the described input shaft other end is fixed with the outer ring of described 4th bearing, described input shaft is connected with rotor with the cooperation of female splines by male splines, one end of described output shaft is arranged on the inner ring of the 3rd bearing, the other end of described output shaft is arranged on the inner ring of the 4th bearing.
2. electric automobile driving apparatus according to claim 1, is characterized in that: described change speed gear box is provided with buckle, and described motor is provided with the draw-in groove matched with described buckle, and described change speed gear box and motor are located mutually by the cooperation of buckle and draw-in groove.
3. electric automobile driving apparatus according to claim 1, is characterized in that: also comprise bolt, described change speed gear box is bolted on motor.
4. electric automobile driving apparatus according to claim 1, is characterized in that: also comprise transmission shaft, described output shaft is connected with transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925146.7U CN205113001U (en) | 2015-11-19 | 2015-11-19 | Driving device for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925146.7U CN205113001U (en) | 2015-11-19 | 2015-11-19 | Driving device for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205113001U true CN205113001U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520925146.7U Active CN205113001U (en) | 2015-11-19 | 2015-11-19 | Driving device for electric automobile |
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| CN (1) | CN205113001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291827A (en) * | 2015-11-19 | 2016-02-03 | 福建省福工动力技术有限公司 | Electric automobile driving device |
-
2015
- 2015-11-19 CN CN201520925146.7U patent/CN205113001U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291827A (en) * | 2015-11-19 | 2016-02-03 | 福建省福工动力技术有限公司 | Electric automobile driving device |
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